import { RpcSource } from './index.js';
/**
 * Retrieves cross-domain message information from a transaction.
 *
 * @param tx - The transaction hash.
 * @param rpc - The RPC source to use for querying the blockchain.
 * @param l1MessageQueueProxyAddress - The address of the L1 message queue proxy contract.
 * @returns A promise that resolves to an object containing the queue index and L2 transaction hash.
 * @throws An error if the transaction is not found or if the QueueTransaction event is not found.
 */
export declare function getCrossDomainMessageFromTx(tx: string, rpc: RpcSource, l1MessageQueueProxyAddress: string): Promise<{
    queueIndex: number;
    l2TxHash: string;
}>;